CN1135969A - Ink-jet printing apparatus - Google Patents
Ink-jet printing apparatus Download PDFInfo
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- CN1135969A CN1135969A CN95120140A CN95120140A CN1135969A CN 1135969 A CN1135969 A CN 1135969A CN 95120140 A CN95120140 A CN 95120140A CN 95120140 A CN95120140 A CN 95120140A CN 1135969 A CN1135969 A CN 1135969A
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- ink
- printing ink
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B41J15/048—Conveyor belts or like feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17566—Ink level or ink residue control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
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- Ink Jet (AREA)
- Coloring (AREA)
Abstract
Upon adjustment of an ink level of an air buffer in an ink supply system supplying an ink to a printing head via the air buffer from a sub-tank, by driving a pressuring motor of the sub-tank, the ink is fed under pressure. When the ink is reached at the position of a connection opening of the air buffer, the excess amount of ink is discharged for adjustment of the ink level. At this time, the ink discharged through the connecting opening is returned to the sub-tank via the ink tube. Thus, the ink consumed during the ink level adjustment can be avoided. With a construction set forth above, the shown case, the in the ink-jet cloth printing apparatus, in which the ink is supplied to the printing head via the air buffer, the ink amount to be consumed during the ink level adjustment of the air buffer is eliminated so that the ink consumption of the overall can be reduced.
Description
The present invention relates to a kind of ink jet printing device in general.Specifically, the present invention relates to a kind of like this ink jet printing device, wherein cloth is used as printed medium, utilize a kind of ink gun that for example printing ink one class I liquid I is ejected into simultaneously and carry out the cloth printing on the cloth.
Traditionally with the information output apparatus of ink jet printing device as information processing system, this treatment system for example has duplicator, facsimile machine, electronic typewriter, word processor, word processing system, and the portable or portable output device as personal computer, master computer, CD drive, video equipment or the like is perhaps arranged.
This class ink jet printing device be by nozzle (being referred to as spray-hole later on sometimes) spray particulate printing ink come the advantage of this kind ink jet printing device of printable character and image be have very high resolution ratio with can flying print.In addition, this PRN device is because the quiet character that printing had of non-impact type, owing to easily adopt polychrome printing ink to carry out colour print, also owing to easily the pixel that constitutes print image is reduced its size and increases its density, in just promptly popularizing.
Here should be interpreted as " printing " speech provide that printing ink goes to print, imaging, record, dyeing, or the like.So above-mentioned ink jet printing device can not only be used for field of information processing, also widely applicable industrial circle, clothing industry for example, wherein with cloth, yarn material, paper stock, flaky material, or the like be used as the printed medium that receives printing ink.
As an example of this printing usefulness, adopt the cloth PRN device of ink-jet system to become known technology in recent years.The advantage that the cloth that carries out with this type systematic is printed is, can make the printing of an image have the very big free degree and overall expenses is reduced, this is owing to print not as screen net formula cloth when being engaged in cloth and printing with ink-jet system and need provide the raw sheet for the treatment of print image like that.An example of this class inkjet type cloth PRN device structure has been disclosed in No. 212851/1993, the Japanese patent application (disclosing).
Point out in passing, in such ink-jet cloth PRN device, depend on the kind of used cloth and/or color to be printed, need to change printing ink sometimes.At this moment clean with regard to the residual ink in the necessary discharge ink supply system and with this system, load the new ink that supplies next time to print usefulness then again.
As what discuss in No. 38616/1994, the Japanese patent application of common transfer, above-mentioned to load operation again be to carry out with a kind of pressing mechanism that is located in the ink supply system, and from then on discharging printing ink in the system then is to carry out with a kind of external device (ED).In addition, in No. 38616/1994, this patent application, also be described to a kind of structure, in the time will changing printing ink to another kind of printing ink, be that whole ink supply passage is changed wherein, thereby do not need ink supply system is discharged its remaining printing ink and to the operation of its cleaning.
As the example of the ink supply system in the traditional typical imaging device that adopts ink gun, known have a kind of equipment that is disclosed in No. 89565/1981, the Japanese patent application (disclosing).Ink supply system bright shown in it comprises: first container is used for pre-storage to wait to be supplied to the printing ink of printhead; Second container is used for storing printing ink temporarily, and it is arranged on the printing ink in first container is supplied in the printing ink runner of printhead.According to the surplus quantity of ink in second container that detects, drive a pump with printing ink from first supply for receptacles, second container, make the printing ink in second container remain to a predetermined quantity.Tackle the excessive measure of supply second container processes as printing ink is supplied to from first container, in second container, be provided with a kind of structure that solves overflow.
Fig. 1 has schematically illustrated another example of traditional oils ink supply system in the PRN device that adopts ink-jet system.
In minute groove 201, be provided with a fan 207a.This fan 207a is that a motor 207 drives the printing ink pressurization of rotating in the branch groove 201, and it is carried through supply pipe 201a and 201b under pressured state.Like this, formed the circulation of printing ink according to the direction order of pipe 201a, 201b, ink gun 1100 and printing ink pipe 201c.Under this kind situation, just restored to the original state or avoided because of in ink gun 1100, take place stopping up or produce ink-jet fault that bubble caused.Specifically, the bubble in the ink gun can turn back in the branch groove 201 by printing ink pipe 201c.Equally, and the printing ink that strengthened viscosity contiguous at spray-hole then since in above-mentioned circulation pressure slightly raise and from spray-hole, discharge.
In air buffer 202, be provided with an air outlet 202a so that air capacity wherein remains unchanged.Exactly, when the air capacity in this air buffer becomes more than or equal to scheduled volume, be that the driving of compression motor 207 adds and depresses at printing ink, there is an air valve 203 to open regularly, make air pass through a discharge pipe 204 and discharge, allow air capacity keep constant.At this moment, when air capacity was suitable, printing ink was promptly discharged by discharge pipe 204.So can maintain the liquid level of printing ink consistently.
Be installed in the ink cartridge 205 on the branch groove 201, when the printing ink liquid level in minute groove 221 drops to the low end of printing ink pipe of ink cartridge 205, be suitable for being used for making printing ink to flow out.So the printing ink liquid level in the branch groove 201 is remained unchanged, stably supply printing ink and can keep a negative pressure that acts in the ink gun consistently.
Should know that ink gun 1100 is to install with respect to ink supply system shown in Figure 1 with separable form.Therefore, when changing ink gun, be on the part of a connector 206, another ink gun to be changed in its disconnection.
But in the ink supply system in above-mentioned two kinds of prior arts, anyly all can run into following variety of problems no matter be.In the situation of bright prior art shown in Figure 1, stable for making ink jet, air buffer is located at place, centre position in the ink supply system.Under above-mentioned restriction, in order to carry out level control in air buffer, some printing ink just will inevitably be discharged from equipment with air when discharging air.So it is big many that the quantity of ink that is consumed consumes in will printing than reality, forms one of reason that strengthens into producing cost.
Simultaneously, in above-mentioned traditional structure, the replacing that is accompanied by ink gun also can cause some problems.Specifically, when changing ink gun, need remove as storing liquid and be sealed in head filling material in the ink gun, this filling material then is used for to distribute at product by a kind of outer mold the storage ability is provided reliably.In this operation, this kind packing fluid is to be changed by the printing ink of waiting to be used in the ink gun.So, need provide a collection of outer mold usually, the number of this batch mould should be suitable with the color of ink number, in order to avoid make blend of colors in printing ink.Its result strengthens cost.Also because this mould only is used for changing printing ink, the long period of changing printing ink at interval in, the printing ink in the mould may cause fatigue.When under this fatigue state, printing ink being used to print, just may cause image quality decrease.
Except the above-mentioned relevant structure problem of ink supply system, for example in the prior art of cloth PRN device, owing to adopted ink supply system also can bring some problems with two containers.Specifically, in this cloth PRN device, because print area is bigger, each ink gun respectively has considerable ink jet hole or jet orifice so be provided with a collection of ink gun, is used for printing continuously on elongated cloth.The amount that general printer is consumed in office or other department so printing ink consumption wherein will become.In this case, owing to normally the size of aforementioned capacity is restricted in the certain limit with respect to the cloth PRN device, generally can cause printing ink is fed to second container from first container.At this moment, in traditional ink supply system, just can be similar to foregoing problems and cause printing ink overflow from second kind of container like that.If the printing ink of overflow is disposed as spent ink, this just becomes a rather problem of waste.On the other hand, when the printing ink seasoning that overflows in another container, then added space need be arranged.The printing ink that a kind of structure makes collection need be set in addition to be turned back in first container.
In addition, also have such problem during printing ink in changing above-mentioned cloth PRN device, the operation that promptly must relate to a trouble is discharged the residual ink in the ink supply system and is refilled with new printing ink after having cleaned this system again.Have, when many group ink supply systems being combined when replacing the operation of changing printing ink, the cost of equipment just will increase corresponding to set ink supply system group number again.
So one of purpose of the present invention is to provide a kind of like this inkjet printing to establish and puts forth energy, it turns back in the ink tank printing ink of having discharged this equipment in prior art already, and can reduce unnecessary printing ink consumption by adopting a kind of simple structure.
Another object of the present invention is to provide a kind of like this ink jet printing device, it refills will be used in the printing ink in this equipment by the filling material that adopts a kind of structure to discharge in the ink gun, can improve the operability of this equipment, the quality of the image printed, simplify the structure of this equipment simultaneously.
Another purpose of the present invention is to provide a kind of like this ink jet printing device, and it can easily realize above-mentioned two purposes, and allows to set up one and comprise the total system that ink head is resumed operation.
Another purpose again of the present invention is to provide a kind of like this ink jet printing device, wherein the printing ink liquid level in the air buffer is adjusted to a printing ink liquid level and regulates the liquid level of outlet, the printing ink of discharging through this outlet then can direct into a position that can make an ink supply unit can supply this kind printing ink, can be used for the printing ink supply to the printing ink of this discharge once more thus.
The present invention has a purpose to be to provide a kind of like this ink jet printing device again, printing ink wherein is by comprising that the printing ink feed path that printing ink supply road and a printing ink return circulates, it is that a valve cuts out that this printing ink of while returns, it is that above-mentioned valve cuts out under the condition by pressue device pressurization and carries that printing ink returns at printing ink, filling material institute in the feasible new ink gun that loads discharges by outlet, and makes the filling of printing ink energy in this ink gun.
Of the present invention aspect first in, a kind of ink jet printing device is provided, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
An ink reservoir, the printing ink that it is connected between above-mentioned ink supply unit and the ink gun is supplied on the road, is storing and is passing through the printing ink that this printing ink supply road is supplied with; And
One guider, the printing ink that is used for will the printing ink outlet by above-mentioned ink reservoir discharging direct into one, and to make this printing ink be on the position supplied of above-mentioned ink supply unit.
In aspect second of the present invention, provide a kind of ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
Article one, printing ink supply road is used for printing ink is supplied to ink gun from ink supply unit;
Article one, printing ink returns, and is used for printing ink is discharged to from ink gun that to make this printing ink be on the position supplied of above-mentioned ink supply unit;
An ink reservoir, it is connected on the above-mentioned printing ink supply road, is storing and is passing through the printing ink that this printing ink supply road is supplied with;
A guider, the printing ink that is used for will the printing ink outlet by above-mentioned ink reservoir discharging direct into one, and to make this printing ink be on the position supplied of above-mentioned ink supply unit;
A pressue device is used in described printing ink supply road and ink gun return with printing ink wherein printing ink is pressurizeed; And
A valve, it is connected above-mentioned printing ink and returns, and is used for this printing ink of switch to return.
In aspect the 3rd of the present invention, proposed a kind of ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
An air buffer, it is connecting a printing ink supply road between above-mentioned ink supply unit and ink gun, and in the air that is wherein storing predetermined constant; And
A guider is used for the printing ink of being discharged by the printing ink outlet of above-mentioned air buffer is guided, and makes this printing ink can be the position of described ink supply unit supply the printing ink liquid level of this air buffer is adjusted to one.
This guider can have an outlet duct that leads to above-mentioned outlet to regulate to be used for the carrying out printing ink liquid level, wherein also has a valve setting to be used for this outlet duct of switch simultaneously.
In aspect the 4th of the present invention, proposed a kind of ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
Article one, printing ink supply road is used for printing ink is supplied to ink gun from ink supply unit;
Article one, printing ink returns, and is used for printing ink is discharged to from ink gun that to make this printing ink be on the position supplied of above-mentioned ink supply unit;
A pressue device is used in described printing ink supply road and ink gun pressurizes to wherein printing ink in returning with printing ink; And
A valve, it is connected above-mentioned printing ink and returns, and is used for this printing ink of switch to return.
Above-mentioned valve can be a kind of triple valve, wherein return when closing when above-mentioned printing ink, the part of the first side of returning at described printing ink of ink-jet promptly therewith printing ink supply road lead to.
In aspect the 5th of the present invention, proposed a kind of ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
Article one, printing ink supply road is used for printing ink is supplied to ink gun from ink supply unit;
Article one, printing ink returns, and is used for printing ink is discharged to from ink gun that to make this printing ink be on the position supplied of above-mentioned ink supply unit;
An air buffer, it and above-mentioned printing ink supply road lead to and are storing the air of predetermined constant;
A guider is used for that the printing ink liquid level of this air buffer is regulated printing ink that outlet discharges and directs into a position that this printing ink can be supplied for aforementioned ink supply unit;
A pressue device is used in described printing ink supply road and ink gun pressurizes to wherein printing ink in returning with printing ink; And
A valve, it is connected above-mentioned printing ink and returns, and is used for this printing ink of switch to return.
Above-mentioned valve can be a kind of triple valve, wherein return when closing when above-mentioned printing ink, the part of the first side of returning at described printing ink of ink-jet promptly therewith printing ink supply road lead to.
Above-mentioned guider can have one to be regulated outlet duct that outlet interlinks and one with described printing ink liquid level and is used for the valve of this outlet duct of switch, and it is common that this outlet duct and a part of printing ink return.
In aspect the 6th of the present invention, proposed a kind of ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
A supplemental tank is being stored the printing ink of waiting to be supplied in the supply tank; Article one, add, be located between this supplemental tank and the supply tank;
A kind of supplementary device is used for making printing ink to add by this and carries described supply tank from described supplemental tank; And
Article one, the excess of ink road is used for surpassing an excess of ink of being scheduled to the printing ink liquid level and directs in the above-mentioned supplemental tank.
This ink jet printing device can comprise that also an atmosphere leads to, it and above-mentioned add by, this adds and communicates with atmosphere via a valve by it, and by aforementioned supplementary device atmosphere is incorporated in this adds leading under the condition with atmosphere.
A supply road can be set between described supply tank and ink gun, and this supply road diverges out from above-mentioned adding, simultaneously is provided with one in supplementary device one side of this auxiliary channel junction portion and is used for this valve of adding of switch.
Among described supply road, can be provided with one and be used for its valve of switch.
Another supply road can be set between described supply tank and ink gun.
In aspect the 7th of the present invention, a kind of a kind of ink jet printing device described in appended claim 16 is provided, it includes the above-mentioned supply tank of many groups, add, excess of ink road, atmosphere lead to, junction portion and another supply road, and printing ink then is to supply with above-mentioned many groups supply tank from a single supply tank.
The accompanying drawing of most preferred embodiment can be understood the present invention more all sidedly from the following detailed description of doing and according to the present invention, but this embodiment and accompanying drawing not should with as limitation of the present invention, and just be used to the purpose explaining and be convenient to understand.In the accompanying drawings:
Fig. 1 schematically illustrates traditional ink supply system;
Fig. 2 is a side view, schematically shows the embodiment of a kind of ink jet printing device of the present invention;
Fig. 3 is a perspective view, has schematically shown printing equipment and induction system in a kind of ink jet type cloth PRN device;
Fig. 4 is the front schematic view in the above-mentioned ink jet type cloth PRN device;
Fig. 5 has schematically shown the structure of first embodiment of a kind of ink supply system of the present invention;
Fig. 6 has schematically shown the ink supply system from a branch groove to a printhead, and the printing ink supply operation when ink jet has been described simultaneously;
Fig. 7 has schematically shown the operation of regulating the printing ink liquid level in the ink supply system of Fig. 6 in an air buffer;
Fig. 8 has schematically shown the operation of removing air in the printhead of ink supply system shown in Figure 6;
Fig. 9 has schematically shown second embodiment of ink supply system of the present invention, is used for illustrating that a kind of injection resumes operation;
Figure 10 schematically illustrates the printing ink packing job in second embodiment of above-mentioned ink supply system;
Figure 11 schematically illustrates the printing ink packing job when changing printing ink in second embodiment of this ink supply system;
Figure 12 schematically illustrates the printing ink discharge operation when changing printing ink in second embodiment of this ink supply system; And
Figure 13 has schematically shown the 3rd embodiment of this ink supply system.
Referring to accompanying drawing in detail most preferred embodiment of the present invention is described in detail below.Outlined numerous details in the following description, purpose is and can well understands the present invention.But concerning the expert, obviously can not have under the condition of these details to implement of the present invention.Then not quite clearly in other cases show known structure, in order to avoid unnecessarily make the present invention's indigestion that becomes.
(1) explanation of outfit of equipment structure
As the example of using a kind of ink jet printing device of the present invention, in Fig. 2, show the general structure of understanding a kind of cloth PRN device.Label 1 among Fig. 2 refers to the cloth of a kind of medium that are used for printing (printed medium).Cloth 1 is extracted out by the rotation of conveying roller 11, by a portion that transports 100 that is oppositely arranged with printing portion 1000, by intermediate calender rolls 13 and 15, transmit along a substantially horizontal direction, and then batched by a takers-in 21 by a conveying roller 17 and an intermediate calender rolls 19.
Pingdu is guaranteed down is in cloth 1 in the conveying, in the zone between a pair of rolling plate roller 140, provides as the printing ink of printing agent by printing portion 1000.Then in the position of transporting roller 120, with the cloth printed from moving belt 130 or adhesive layer 133 peel off, batch by takers-in 21 again.In the process that advances to takers-in 21, do dry the processing with 600 pairs of clothes of a drying heater.For this drying heater 600, should know and can adopt the cloth blowing hot-air, with infrared radiation to the cloth or the heater of any appropriate format.
(2) explanation of printer arrangement
Fig. 3 is the printing portion and the perspective view that transports system that schematically shows cloth, and Fig. 4 is the profile that shows bright relevant frame scanning system.The structure of printing portion 1000 is discussed referring to Fig. 2,3 and 4 below.
At first in Fig. 2 and 3, printing portion 1000 has a frame 1010 that scans in the direction that is different from cloth 1 carriage direction F (being called sub scanning direction later on), back one direction for example be perpendicular to the cloth of above-mentioned throughput direction F wide to.1020 refer to that the latter is supported in again on the slide rail 1022 at the supporting track of S direction (being called main scanning direction later on) extension.Slide rail 1022 supportings and guiding are installed in the slide 1012 on the frame 1010.1030 refer to a motor, and it forms the drive source that is used for carrying out frame 1010 main scannings.The driving force here is to send frame 1010 to by belt 1032 and other suitable transmission mechanism.
In the embodiment shown, as shown in Figure 2, the printhead 1100 that this batch is disposed in the main scanning direction is that classification is located among the carriage direction F.The arrangement order of the number of color of ink, printhead, printhead, or the like, can identical or also can be different among at different levels.On the other hand, the main scanning of printhead that can be by the first order is printed (carry out the auxiliary printing of light density printhead by the printhead in the associated stage, or overstriking) by the printhead of next stage once more with respect to district to be printed.In addition, also can carry out flying print by shared print zone.Have, the level of printhead also is not limited to two-stage, and can be one-level or three grades again.
In the embodiment shown, for example can adopt a kind of spray bubble head as the ink gun of printhead 1100, it have by a kind of heating member produce in printing ink, form film boiling heat energy to be used as the energy that ink jet is used.Then for adopting such condition by transporting the cloth 1 that portion 100 transports according to the substantial horizontal direction, promptly when jet orifice is orientated down, eliminate the meniscus difference between each jet orifice, make injection conditions evenly guarantee the superior in quality of image, and can make all spray-holes have consistent recovery process.
A covering device 1220 is arranged among Fig. 4, it when print state not and the jet orifice of each printhead form the surface and touch and close, in order to avoid dry and dust falls into or is used for dedusting.Specifically, under print state not, printhead 1100 is moved on to position with covering device 1220 face-offs.Drive this covering device 1220 by a drive unit according to the housing direction then, by depressing elastic component etc. and housing forms on the surface in jet orifice.
There is a preventing clogging up device 1231 to can be used to receive the printing ink of ejection in the ink ejection operation (should be referred to as " preparation property ink ejection operation), is used in more in the new ink so that the ink-jet state of printhead 1100 is even.This kind preventing clogging up device 1231 is located at outside the printhead prints zone the relative position of printhead therewith.Between covering device 1220 and print zone and opposite side thereof, be provided with printing ink and contain addressee, be used for being absorbed in the printing ink that sprays in the preparation property ink ejection operation.Should know that a kind of printing ink keeper is located at this printing ink to be contained in addressee, this printing ink keeper then is to be formed by the foam element of spongy top etc.
Be provided with the i.e. scraping blade 70 of a clearing apparatus between covering device 1220 and print zone, it can be swept jet orifice clean or cleaning printhead 1100 and form the surface, is provided with to be used for cleaning and to be deposited on jet orifice and to form the lip-deep globule, dust or the like.
First embodiment
Fig. 5 has schematically illustrated first embodiment of ink supply system of the present invention.
Ink supply system of the present invention generally is configured to have: an ink gun 1100; A branch groove 401 that is storing the printing ink that will be supplied to ink gun 1100; A major trough 301 that is storing the printing ink of waiting to be supplied to branch groove 401, and be connected printing ink pipe between the above-mentioned parts, or the like.
Undertaken for branch groove 401 supply printing ink by managing 354,352,353 and 453 from major trough 201.On the supply road of forming by this this pipe, be provided with pump 302 and check-valves 303.In addition, near the branch groove 401 of this supply pipe, be provided with a two-way valve 403 be used for switch this supply road.Near major trough 301, there are atmosphere connecting pipe 355 and 356 and one communication valve 304 to lead to by a three-way connection 371 and pipe 354.Manage and utilize communication valve 304 to set up and end 355 and 356 lead to.
Centre position in above-mentioned supply road, pipe 452,554 is connected by a three-way connection 471 mutually with 552.Then be connected on the ink gun 1100 by these pipe 452,554 and 552 supply roads of forming.In addition, between minute groove and ink gun, be connected one by pipe 551, air buffer 451 and the pipe 451 supply roads that constitute.
Connecting a pipe 555 on a side of a two-way valve 503, an end of this pipe links to each other with air buffer 501 and leads to a corresponding liquid level of predetermined level in the buffer therewith at this.The opposite side of this two-way valve 503 links to each other with a pipe 556.The other end of pipe 556 then is connected to the supply road of being made up of pipe 452 grades by a three-way connection 571.One end of a pipe 553 that links to each other with air buffer 501 bottoms in addition, then links to each other with comprising the passage of managing 552 grades by a triple valve 502.
Divide and to be provided with one in the groove 401 and to be used for be used for the motor 402 of drive fan 402a by the fan 402a and that manages the printing ink pressurization that 451 grades are supplied.In minute groove 401, also be provided with a delivery pipe 404 and be used for discharging or discharge printing ink above predetermined level.A pipe end of 354 other end that links to each other with delivery pipe 404 then communicates with upright groove 301.
Fig. 6 is the operation of first embodiment of ink supply system shown in the key diagram 5 schematically.
When normal printing job, along with the negative pressure that printhead 1100 ink jets are produced, just have printing ink through manage 451, air buffer 501 is supplied in printhead 1100 with pipe 551.In addition, the printing ink that a part is supplied promptly is diverted to pipe 553 and 552 from air buffer 501, so that be supplied in printhead 1100.In response to above-mentioned printing ink supply, printhead 1100 promptly ejects printing ink to print (referring to Fig. 2) on cloth 1 by jet orifice 1100a.In this printing ink supply process, when having sneaked into bubble in the printing ink, these bubbles can be gathered in the top of this air buffer mutually continuously.So can prevent from effectively to cause the ink-jet fault because of the generation of bubble in the printing ink.
But when the bubble of being assembled in the air buffer increases and when filling up therebetween, this bubble can be fed in the printhead via pipe 551 grades at last.For exempting to occur this situation, must regulate the air capacity in the slow device of air regularly.Control method is as follows.
Drive the printing ink pressurization in 402 pairs of printing ink supplies of the compression motor road that divides in the groove 401, at this moment, this kind printing ink will flow through and be similar to supply those passages during printing ink, shows to conveying that by arrow A 1, A2, A3 and A4 under pressure the jet orifice 1100a by printhead 1100 squeezes out at last.
Under above-mentioned state, as shown in Figure 7, control valve 503 is opened, and forms via it and leads to.At this moment since printing ink in pressure, the printing ink liquid level in the air buffer just raise and arrive excessive.At this moment be gathered in the air buffer bubble just according to arrow A 5 and A6 show to, by manage 555,556, three-way connection 571 and pipe 452, and input divides in the groove 401.Because divide groove 401 to communicate with atmosphere, the air that is incorporated into is wherein just discharged from equipment.
Like this, the air in the air buffer 501 is just discharged with coming out gradually.When the printing ink liquid level reaches the height of intercommunicating pore 501a via pipe 555 by discharging operation, the printing ink of this moment just by manage 555,556, three-way connection 517 is incorporated in the branch groove 401 with pipe 452.The result can make the air capacity in the air buffer 501 keep constant basically.
So in described embodiment, the printing ink when discharging from PRN device by regulating the printing ink liquid level in the air buffer in the prior art enables to turn back in the branch groove as ink supply unit.Thereby can reduce the quantity of ink that is consumed.
In addition, when under the condition that control valve 503 cuts out, driving compression motor 402, just can be the pressure of printing ink be used for resuming operation a kind of means as preventing the printhead obstruction.So,, just can carry out the printing ink pressurization effectively and regulate these two work of printing ink liquid level in the air buffer by control and regulation valve 503.
The printing ink that is carried out when changing printhead by structure shown in Figure 6 is discussed is below discharged operation.
In Fig. 6, when changing printhead, disconnect printing ink joint 1102, and connect the upward new printhead that loads of plan.This moment is at the logical filler that we am used to store in the filling in 1101 of new printhead.In these cases, drive compression motor 402, the ink pressure in the printing ink supply road just strengthens.Like this, printing ink just showing under pressure according to arrow A 1, A2, A3 and A4 to conveying.So in the oil circuit 1101 of printhead, printing ink is just from two side inflows.From printhead, discharge the filler that is filled in the oil circuit 1101 by jet orifice then.So by carrying out the printing ink pressurization operation of one period scheduled time, the filler in the printhead 1100 just is the printing ink displacement of supply from minute groove 401.
Should be noted that as shown in Figure 8, when the valve position of conversion triple valve 502, leading to just between pipe 552 and the pipe 553 is cut off, between pipe 552 and 554, just form simultaneously and lead to.In this case, by driving compression motor 402, a part of printing ink in the printhead 1100 just is similar to the situation printhead discharge from then on of prior art, and stay bubble in the printing ink runner 1101 just with printing ink, by manage 552, triple valve 502, pipe 554 and 452 (according to direction A7 among the figure and A8), be incorporated in the branch groove 401.
So by above-mentioned valve regulation being become in the printing ink supply road between printhead and branch groove printing ink is ended control, just can be engaged in the air that is similar in the prior art and discharge operation.Remove this,, can when changing printhead, remove the filler in this by the valve position of conversion with respect to the triple valve 502 of Fig. 6 setting.
Have again, in the embodiment shown, when utilizing joint 571 and pipe 452, when being used for driving printing ink and assimilating, just can reduce overall pipeline amount and reduce the size of overall device in air buffer, to regulate the printing ink passing away of printing ink liquid level and the printing ink passing away of printhead etc.
Second embodiment
Fig. 9 has schematically provided the detailed structure of second embodiment of ink supply system 1130 of the present invention.Though Figure 10 and Fig. 9 are similar, but it is that the recirculation of printing ink is the state as a kind of ink-jet recovery process in the printhead 1100 that Fig. 9 shows bright, and Figure 10 shows that bright to be printing ink be fed to state as the printing ink supply tank 1401 of second container from the printing ink supplemental tank 1301 as first container.Bright ink supply system shown in these two figure is to be arranged to such position relation, and wherein under the condition of the illustrated embodiment that the cloth PRN device is installed, the top among the figure refers to the top of vertical direction, and the bottom among the figure refers to the bottom of vertical direction.
Be noted that ink supply system is provided with the parts shown in Figure 10 and 12 shown in Fig. 9 and 10, but for convenience of explanation, in Fig. 9 and 10, omitted these parts.
Shown in Fig. 9 and 10, between printing ink supplemental tank 1301 and printing ink supply tank 1401, be provided with a printing ink and add 1353 and excess of ink roads 1354.On printing ink is added 1353 mid portion 1352, in series be provided with a printing ink make-up pump 1302 and a check-valves 1303.One end in excess of ink road 1354 connects one and is located at the overflow drain tube 1404 of being scheduled to printing ink liquid level place in the printing ink supply tank 1401, forms the passage that a perpendicular is extended downwards, arrives the other end of printing ink supplemental tank 1301.
Printing ink supply tank 1401 is provided with a compression motor 1402 and turbine 1402a of motor driving for this reason.Like this, the printing ink in the groove 1401 just can transfer to printhead under pressure.Printing ink supply tank 1401 generally is interconnective with outlet duct 1452 by pressurization road 1451 with printhead 1100.Centre position in pressurization road 1451 is provided with an air buffer 1501.In addition, between pressurization road 1451 and outlet duct 1452, be provided with a triple valve 1502 of selectively establishing the printing ink runner.Similarly, between outlet duct 1452 and air buffer 1507, be provided with a two-way buffer valve.
Below operations such as printing ink circulation, printing ink supply will be discussed according to said structure.
Fig. 9 shows the printing ink recirculation operation of understanding in the printhead.In Fig. 9, the printing ink in the printing ink supply tank 1401 is pressurizeed by the turbine 1402a that compression motor 1402 drives, and is input in the printhead 1100 that links to each other with a stature connecting portion 1102 with air buffer 1501 by pressurization road 1451.Be incorporated into printing ink in the printhead promptly in wherein circulation, simultaneously the jet orifice by printhead and slightly discharging.Subsequently, just the printing ink of this circulation, turns back in the printing ink supply tank 1401 as arrow b direction among Fig. 9 by a connecting portion 1102 and outlet duct 1452.
At this moment, the valve position of triple valve 1502 just commutates, and makes the printing ink of recirculation turn back to outlet duct 1452 from printhead 1100.Above-mentioned air buffer 1501 when pressurization road 1451 along with the scanning activity of printhead 1100 when mobile, or depress when mobile adding for turbine when this pressurization road 1451, can be used to avoid because of this mobile vibration effect that causes.Simultaneously, buffer valve 1503 carries out switch and regulates air capacity in the air buffer 1501.
Should be noted that when beginning ink jet in printhead, triple valve 1502 is closed, then can only be by the printing ink that pressure differential between printhead 1100 and the supply tank 1401 is supplied by pressurization road 1451.But also can both supply printing ink by pressurization road 1451 and outlet duct 1452.
Figure 10 shows the operation of understanding from supplemental tank 1301 additional printing ink to supply tank 1401.From supplemental tank 1301 when supply tank 1401 replenishes printing ink, both close triple valve 1502 and buffer valve 1503 with by the ink flow of pressurizeing between road 1451 and the outlet duct 1452.Extract printing ink in the supplemental tank 1302 out by printing ink make-up pump 1301 then, and by add 1353, connecting portion 1471 with add that 1453 are input in the supply tank 1401.
Can not show that the membrane pump of bright check-valves is as this printing ink make-up pump 1302 having one.But as shown in FIG., can check-valves 1303 be set mutually independently with this pump.By this check-valves, because the pressure differential between pressurization road and the outlet duct, printing ink can flow back in the supplemental tank fast.
Be provided with overflow discharge pipe 404 for supplemental tank 1401.Like this, for above-mentioned make-up pump is incorporated into excess of ink in the supplemental tank, just can turn back in this make-up pump by this overflow discharge pipe and excess of ink road 1354 at lower position.
As mentioned above, in the embodiment shown, close the valve 1502 and 1503 that is located between outlet duct and the ink gun by the pass, by above-mentioned printing ink make-up pump, printing ink just can show in adding to supply tank according to arrow C Figure 10 from outlet duct.So just, can be simplified to the runner of supply tank.Then, the printing ink of overflow can flow back into directly just that to be arranged in than supply tank be low supplemental tank.So just can avoid causing the waste of printing ink maybe to need collected overflow printing ink is refilled in this supplemental tank because of the printing ink of discharging overflow.
Figure 11 has schematically shown a kind of a kind of structure of changing printing ink in the above-mentioned ink supply system of having simplified.
As shown in figure 11, between connecting portion on the outlet duct shown in Fig. 9 and 10 1,452 1471 and supply tank 1401, be provided with a stop valve 1403 that is used for ending ink flow.
When stop valve 1403 cuts out as shown in the figure, printing ink in the supplemental tank 1301 can be by make-up pump 1302 shown in Figure 11 arrow d, c and f, obtain supply, and can be filled to by add 1353, in the printing ink runner that outlet duct 1452, printhead 1100, pressurization road 1451 and printing ink supply tank 1401 are formed.
When the result replenishes printing ink in changing printing ink, by closing the valve that is located between outlet duct and the supply tank, by means of the make-up pump that is located in the ink supply system, just can be without external device (ED) inking in whole ink supply system.
Figure 12 has schematically shown a kind of structure, is used for before the described filling printing ink with respect to Figure 11, when changing printing ink printing ink is discharged from ink supply system.
In that 1310 path is connected with an atmosphere and leads to portion 1355 from supplemental tank 1301 to make-up pump.This atmosphere is led to portion 1355 be provided with an atmos-valve 1304, be used for carrying out switch to realize leading to and ending to atmosphere.
When atmos-valve 1304 remains in the open state following time of leading to as shown in figure 12, above-mentioned atmosphere leads to 1355 and just leads to atmosphere and introduce air from external environment condition.In this case, when driving make-up pump 1302, above-mentioned air just by add 1353, outlet duct 1452, ink gun 1100 be filled in the runner that leads to supply tank 1401 with pressurization road 1452.Like this, the printing ink in the supply system just the row of being forced to supply tank 1401 or supplemental tank 1301.
Utilize said structure, be located at the valve that the atmosphere between supplemental tank and the make-up pump leads to, drive the make-up pump be located in the whole ink supply system, just can push air to discharge printing ink in this supply system by opening.
The 3rd embodiment
Above-mentioned supply system is to be provided with in the two-stage of the printhead of cloth PRN device (referring to Fig. 2) at different levels.Shown embodiment has shown the structure of supplying printing ink to two ink supply systems from a supplemental tank.
Figure 13 schematically shows the embodiment that is under the following situation, and promptly Ci Shi printing ink is replenished by single printing ink supplemental tank and gives two groups of ink supply systems.
In Figure 13, the printing ink in supplemental tank 1301 that is aspirated for make-up pump 1302 is fed in two ink supply systems, and is to add that by printing ink 1353 distribute to these two systems by being located at the distribution retainer 1380 that printing ink adds.Supply system shown in operations such as the supply in these two ink supply systems and Fig. 9 to 12 is similar, and this can be clear that from Figure 13.
As mentioned above, by shown in embodiment because PRN device is through being configured to supply printing ink from single supplemental tank towards two supply systems, so the number of parts can reduce.In addition, from respect to the discussion of illustrated embodiment as can be known, printing ink supplemental tank that can also be from then on single is formed two groups of above ink supply systems to two and is replenished printing ink.
Should be noted that, apply the present invention in the cloth PRN device although top discussion all concentrates in relevant embodiment, bright purposes shown in application of the present invention is not limited to, and can be applicable in the used usually ink-jet work operations.
Whole operations that the ink-jet fabric is printed are described below.After adopting above-mentioned ink jet printing device finish the ink-jet fabric to print operation, with fabric drying (comprising air dry) in addition.Follow the dyestuff spreading on fabric, and carry out the operation that is fixed on the fabric with making dye activity together.Under this operation, because the set of dyestuff can make the fabric of having printed obtain sufficient colorability and intensity.
In the above-mentioned operation that makes dyestuff dispersion and the set of active ground, can adopt traditional known method.For example be referred to as a kind of method of steam method.In this case, can carry out before the fabric printing fabric being made basic treatment.
Then in postprocessing working procedures, the material of removing unreacted dyestuff and in preparatory process, using.Carry out defect correction, flatiron finishing and other adjusting and finishing step at last.
Specifically, for being applicable to that the fabric that the ink-jet fabric is printed requires to possess the following function characteristic:
(1) color should occur with sufficient density in printing ink.
(2) concerning printing ink, it is high that the set coefficient of dyestuff is wanted.
(3) printing ink must rapid draing.
(4) generation of irregular printing ink spreading will be restricted.
(5) can be under superior condition in PRN device feed.
In order to satisfy above-mentioned requirements, can do preliminary treatment to the fabric that is used for this printing as required.In this case, the method that makes fabric have a receiving layer for example has been disclosed in the Japanese patent application (disclosing) 62-53492 number.In addition, a kind of fabric that contains reduction prophylactic or alkaline matter has been proposed in Japanese Patent Application 3-46589 number.Pretreated example as a kind of method in back can also be enumerated a kind of like this method, promptly allows fabric to contain the material that is selected from following chemical reagent: alkaline matter, water-soluble polymer, synthetic polymer, water-soluble metal salt, or urea and thiocarbamide.
For example can use as alkaline matter: the alkali metal of hydroxide, as NaOH, potassium hydroxide; Monoethanolamine, diethanol amine, triethanolamine and other amine salt, and the alkali metal salt of carbonate or hydrogen carbonate are as sodium carbonate, potash and sodium acid carbonate.Inorganic acid metal salt such as calcium carbonate, brium carbonate are arranged in addition, or the compound of ammonia and ammonia.Can also use the trichloroacetic acid and the similar reagents of sodium in addition, they promptly become alkaline matter through steam or hot air treatment.Then be sodium carbonate and sodium acid carbonate as for the alkaline matter that is specially adapted to this purpose, they can be used in the dye coloring of reactive dye.
As water-soluble polymer, adducible have: starchy material, as corn and wheat; Cellulosic material is as carboxymethyl cellulose, methylcellulose, hydroxyethylcellulose; Polysaccharide, as sodium alginate, gum arabic, tragon, bassora gum, guar gum and tamarind gum; And natural water-soluble copolymer, as tannin and lignin.
As synthetic polymer, polyvinyl alcohol compound, polyoxyethylene ene compound, acrylic acid water soluble (CO) polymers, maleic anhydride water soluble (CO) polymers for example can be arranged, or the like.Ideal at this with polysaccharide polymer and fibre-forming polymer.
As for water-soluble metal salt, the adducible pH that has the typical ionic crystals of production to use is 4 to 10 compound, for example halide of alkali metal or alkaline-earth metal.The exemplary of this compounds has Nacl, a Na for alkali-metal
2SO
4, Kcl and CH
3COONa, or the like; The CaCl that has for alkaline-earth metal
2, MgCl
2, or the like.Special salt ideal with Na, K and Ca etc.
In this preliminary treatment, can be contained in the fabric in order to make above-mentioned material with other, be not limited to a kind of method.But generally can adopt infusion process, padding method, coating, spraying process, or the like.
In addition, because the printing ink that is used in this ink-jet fabric printing just sticks on the fabric, preferably carry out continuous mutually together active set operation (dyestuff set operation), in printing so that the fixing of dye is on fabric.A kind of so active set operation is known in this technology, and steam method, HT steam method and thermal fixation method are for example arranged.And when adopting the fabric of not making any basic treatment in advance, the method that can adopt for example has alkaline pad steam dyeing method, alkalescence completely decatize decoration method, alkaline cold set method, or the like.
In addition, after above-mentioned active set method, can remove nonactive dyestuff and the material of using in this preliminary treatment with known douche.At this, when washing, preferably carry out conventional set simultaneously and handle.
The fabric of soon having printed after executing above-mentioned post processing is by desirable size cutting.Then to the little sheet stock under the cutting, last processing such as for example sewing up, paste and cover and provide finished product.Can make the product, clothes, necktie, swimsuit, skirt, scarf etc. of single-piece and bedcover, sofa cover, handkerchief, curtain, cover, romeo, tapestry, tablecloth thus, or the like.Machine stitching method as making clothing or other commodity can adopt known method.
As mentioned above, according to the present invention, can discharge the surface to the liquid of the first class I liquid I discharge of aforementioned ink-jet head and obtain very high cleaning effect, and make the discharge of this liquid such as printing ink that long stability be arranged as the printing ink discharge is surperficial.
Like this,, also can obtain stable functional rehabilitation effect even adopted the full-bodied liquid or the nozzle of high compaction, even be in the industrialized condition that need under harsh conditions, use for a long time, also can be like this.
The present invention has particularly utilized heat energy to form the method that ink droplet disperses in printing for those for ink jet-print head and PRN device, can obtain superior effect.
As for typical structure that relates to a kind of like this method and operating principle, preferably adopt according to No. 4723129, United States Patent (USP) with No. 4740796 in disclosed basic principle can implement those.This method is applicable to so-called instant answer type print system and continuous type print system.But it is particularly suitable for answering immediately the type print system, this is to have at least one to drive signal (this signal response provides a rapid warm raising that far exceeds the nucleation boiling point in type information) owing to this relevant principle can make, be applied on the electric transducer that is located on a liquid (printing ink) retention tab or the fluid passage, the heat energy that the latter is generated can form film boiling on the hot activation part of printhead; So just become to steep with respect to the driving signal that is arrived is final in printing fluid (printing ink) correspondingly effectively.By the development and the contraction of this bubble, liquid (printing ink) is just discharged by outlet and is formed at least one drop.Above-mentioned driving signal is preferably got impulse form, and this is because can immediately realize the development and the contraction of this bubble, thereby can be with the liquid (printing ink) of response speed discharge faster.
The driving signal of above-mentioned impulse form is preferably got disclosed form in No. 4463359, United States Patent (USP) for example and No. 4345262 the specification.At this,, just can under good conditions, carry out the printing of high-quality if adopted the disclosed condition that relates to area of heating surface heating rate in the specification of No. 4313124, United States Patent (USP) ideally.
The structure of this printhead can be bright the sort of shown in above-mentioned each specification, and is disclosed in this class formation wherein such as the above-mentioned patent, and outlet, fluid passage and electric transducer (the fluid passage here is linear or perpendicular type) are comprehensively arranged.Can also form disclosed the sort of structure in No. 4558333, United States Patent (USP) for example and No. 4459600 the specification in addition, hot activation part wherein then is located in the bending area.
In addition, as the length that the is had full line head suitable with the maximum printing width, when the present invention adopts such structure: or disclosed printhead in conjunction with a plurality of above-mentioned specifications, or the printhead that constitutes by an integral body, when covering described this length, just can more effectively realize aforementioned effect.
Have, the present invention can be effectively used to removable type printhead again, and this printhead is electrically connected with main frame, can supply printing ink to it in the time of on being installed to main frame; The present invention can also be used for a kind of box type printhead effectively, and this printhead has all-in-one-piece ink reservoir.
Not only can be arranged to monochromatic mode as for the printing type of this PRN device based on black, this equipment can also be arranged to a kind of mode that adopts at least in following: the panchromatic mode that has the polychrome mode of different colours printing ink material and/or adopt these color material to mix mutually, and be to form integral form or take the combining form of a plurality of printheads irrelevant with printhead.The present invention can be applicable to a kind of like this equipment extremely effectively.
So far, in the embodiment of the invention described above, printing ink is described as a kind of liquid, but this printing ink can be a kind of curing and the printing ink material that liquefies perhaps can be exactly a kind of liquid when room temperature when being lower than room temperature.Owing to be that printing ink control is not less than 30 ° and be not higher than stability when guaranteeing to discharge in 70 ° the temperature range in the ordinary course of things, thereby this printing ink can be liquefied when being applied with print signal.
In addition, owing to when relevant heat energy being used for making effectively printing ink to become temperature that liquid prevented that this heat energy from causing from solid raising, or adopted in order to prevent printing ink evaporation the sort of under former state is kept somewhere with in the printing ink that solidifies, also can adopt such printing ink in the present invention, this printing ink has a kind of character that heat energy just can liquefy of just thinking to apply, for example it can be so a kind of printing ink, it always can be liquefied as the printing ink liquid that can be gone out by dispatch when awarding its heat energy according to print signal; Maybe can be so a kind of printing ink, it just will begin to solidify on arriving printed medium the time.
As for form as PRN device of the present invention, it can be the copier that is combined with reader or similar device, and facsimile equipment with transmission and receiving function, remove the image output terminal that this also has integrally or body plan becomes messaging device independently, for example word processor and computer.
Claims (19)
1. ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
An ink reservoir, the printing ink that it is connected between above-mentioned ink supply unit and the ink gun is supplied on the road, is storing and is passing through the printing ink that this printing ink supply road is supplied with; And
One guider, the printing ink that is used for will the printing ink outlet by above-mentioned ink reservoir discharging direct into one, and to make this printing ink be on the position supplied of above-mentioned ink supply unit.
2. ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
Article one, printing ink supply road is used for printing ink is supplied to ink gun from ink supply unit;
Article one, printing ink returns, and is used for printing ink is discharged to from ink gun that to make this printing ink be on the position supplied of above-mentioned ink supply unit;
An ink reservoir, it is connected on the above-mentioned printing ink supply road, is storing and is passing through the printing ink that this printing ink supply road is supplied with;
A guider, the printing ink that is used for will the printing ink outlet by above-mentioned ink reservoir discharging direct into one, and to make this printing ink be on the position supplied of above-mentioned ink supply unit;
A pressue device is used in described printing ink supply road and ink gun return with printing ink wherein printing ink is pressurizeed; And
A valve, it is connected above-mentioned printing ink and returns, and is used for this printing ink of switch to return.
3. ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun:
An air buffer, it is connecting a printing ink supply road between above-mentioned ink supply unit and ink gun, and in the air that is wherein storing predetermined constant; And
A guider is used for the printing ink of being discharged by the printing ink outlet of above-mentioned air buffer is guided, and makes this printing ink can be the position of described ink supply unit supply the printing ink liquid level of this air buffer is adjusted to one.
4. ink jet printing device as claimed in claim 1 is characterised in that: described guider has an outlet duct that is used for regulating the printing ink liquid level that is connected with described ink jet hole, has one simultaneously and is located at and is used for the valve of this outlet duct of switch in this outlet duct.
5. ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
Article one, printing ink supply road is used for printing ink is supplied to ink gun from ink supply unit;
Article one, printing ink returns, and is used for printing ink is discharged to from ink gun that to make this printing ink be on the position supplied of above-mentioned ink supply unit;
A pressue device is used in described printing ink supply road and ink gun pressurizes to wherein printing ink in returning with printing ink; And
A valve, it is connected above-mentioned printing ink and returns, and is used for this printing ink of switch to return.
6. ink jet printing device as claimed in claim 5 is characterised in that: described valve is a triple valve, wherein returns when closing when described printing ink, and the part on the first side of the ink-jet that this printing ink returns is promptly led to described printing ink supply road.
7. ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
Article one, printing ink supply road is used for printing ink is supplied to ink gun from ink supply unit;
Article one, printing ink returns, and is used for printing ink is discharged to from ink gun that to make this printing ink be on the position supplied of above-mentioned ink supply unit;
An air buffer, it and above-mentioned printing ink supply road lead to and are storing the air of predetermined constant;
A guider is used for that the printing ink liquid level of this air buffer is regulated printing ink that outlet discharges and directs into a position that this printing ink can be supplied for aforementioned ink supply unit;
A pressue device is used in described printing ink supply road and ink gun pressurizes to wherein printing ink in returning with printing ink; And
A valve, it is connected above-mentioned printing ink and returns, and is used for this printing ink of switch to return.
8. ink jet printing device as claimed in claim 7 is characterised in that: described valve is a triple valve, wherein returns when closing when described printing ink, and the part on the first side of the ink-jet that this printing ink returns is promptly led to described printing ink supply road.
9. ink jet printing device as claimed in claim 8, be characterised in that: described guider has an outlet duct that interlinks with described printing ink liquid level adjusting tap, a valve that is used for this outlet duct of switch, the part that this outlet duct and aforementioned printing ink return then is common.
10. ink jet printing device as claimed in claim 9 is characterised in that: described printed medium is a kind of cloth.
11. ink jet printing device as claimed in claim 9 is characterised in that: described ink gun utilizes heat energy to generate a kind of bubble in printing ink, realizes the discharge of printing ink simultaneously by the generation of this bubble.
12. ink jet printing device, it has adopted a kind of ink gun, and by ink gun ink jet from then on printed medium is printed, and this PRN device comprises:
An ink supply unit is used for printing ink is supplied to ink gun;
A supplemental tank is being stored the printing ink of waiting to be supplied in the supply tank;
Article one, add, be located between this supplemental tank and the supply tank;
A kind of supplementary device is used for making printing ink to add by this and flows to described supply tank from described supplemental tank; And
Article one, the excess of ink road is used for surpassing an excess of ink of being scheduled to the printing ink liquid level and directs in the above-mentioned supplemental tank.
13. ink jet printing device as claimed in claim 12, be characterised in that: it comprises that also an atmosphere leads to, this atmosphere leads to aforementioned adding and leads to, this adds to lead to via a valve and atmosphere by this atmosphere and leads to, simultaneously under the condition of leading to atmosphere, atmospheric pressure promptly is incorporated into during this adds by described supplementary device.
14. ink jet printing device as claimed in claim 13, be characterised in that: between described supply tank and ink gun, be provided with a supply road, this supply road diverges out from above-mentioned adding, simultaneously adds that at this side of junction portion supplementary device is provided with one and is used for the above-mentioned valve of adding of switch.
15. ink jet printing device as claimed in claim 14 is characterised in that: wherein be provided with a valve that is used for the described supply of switch road.
16. ink jet printing device as claimed in claim 15 is characterised in that: between described supply tank and ink gun, be provided with another supply road.
17. ink jet printing device as claimed in claim 16, be characterised in that: this equipment comprises aforesaid many group supply tanks, adds, excess of ink road, atmosphere lead to, junction portion, valve and another supply road, and printing ink then is to be supplied in the supply tank of above-mentioned many groups from a single supplemental tank.
18. ink jet printing device as claimed in claim 16 is characterised in that: described printed medium is a kind of cloth.
19. ink jet printing device as claimed in claim 16 is characterised in that: described ink gun is fit to utilize heat energy to generate a kind of bubble, and the generation along with this bubble simultaneously sprays printing ink.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29693094A JP3229502B2 (en) | 1994-11-30 | 1994-11-30 | Image forming device |
| JP296932/94 | 1994-11-30 | ||
| JP296930/94 | 1994-11-30 | ||
| JP296930/1994 | 1994-11-30 | ||
| JP296932/1994 | 1994-11-30 | ||
| JP6296932A JPH08150730A (en) | 1994-11-30 | 1994-11-30 | Image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1135969A true CN1135969A (en) | 1996-11-20 |
| CN1055659C CN1055659C (en) | 2000-08-23 |
Family
ID=26560913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95120140A Expired - Fee Related CN1055659C (en) | 1994-11-30 | 1995-11-29 | Ink-jet printing apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5943078A (en) |
| EP (1) | EP0714779B1 (en) |
| CN (1) | CN1055659C (en) |
| DE (1) | DE69529884T2 (en) |
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| CN100431842C (en) * | 2003-02-04 | 2008-11-12 | 兄弟工业株式会社 | Bubble removal in an inkjet printer |
| CN104862914A (en) * | 2015-05-13 | 2015-08-26 | 马玉荣 | Dyeing case of full-automatic spreading machine |
| CN104956469A (en) * | 2013-11-19 | 2015-09-30 | 积水化学工业株式会社 | Method for manufacturing electronic component, and electronic component |
| CN105904850A (en) * | 2015-02-25 | 2016-08-31 | 精工爱普生株式会社 | Dummy head and liquid ejection apparatus |
| CN112996669A (en) * | 2018-11-20 | 2021-06-18 | 惠普发展公司，有限责任合伙企业 | Overflow chamber for printing fluid tank |
| CN114103473A (en) * | 2021-11-22 | 2022-03-01 | Tcl华星光电技术有限公司 | Ink jet printing apparatus and ink jet printing method |
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- 1995-11-28 DE DE69529884T patent/DE69529884T2/en not_active Expired - Fee Related
- 1995-11-29 CN CN95120140A patent/CN1055659C/en not_active Expired - Fee Related
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| CN112996669A (en) * | 2018-11-20 | 2021-06-18 | 惠普发展公司，有限责任合伙企业 | Overflow chamber for printing fluid tank |
| US11331904B2 (en) | 2018-11-20 | 2022-05-17 | Hewlett-Packard Development Company, L.P. | Overflow chamber for print fluid tanks |
| CN114103473A (en) * | 2021-11-22 | 2022-03-01 | Tcl华星光电技术有限公司 | Ink jet printing apparatus and ink jet printing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1055659C (en) | 2000-08-23 |
| EP0714779B1 (en) | 2003-03-12 |
| DE69529884T2 (en) | 2003-11-13 |
| DE69529884D1 (en) | 2003-04-17 |
| EP0714779A3 (en) | 1998-04-22 |
| EP0714779A2 (en) | 1996-06-05 |
| US5943078A (en) | 1999-08-24 |
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